incident definition and usage within the eurofot project · incident definition and usage within...

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Incident definition and usage

within the euroFOT project

22nd ICTCT-Workshop, Leeds

Dipl.-Ing. Mohamed Benmimoun

22 - 23.10.2009, Leeds

Institut für Kraftfahrzeuge (IKA)

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Agenda

• Introduction

• Importance of incident

• Incident definition

• Approach in euroFOT

• Current status

• Outlook

14.12.20092 ICTCT 22.Workshop, Leeds

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Introduction

Objectives of euroFOT• To assess the impacts of ADAS in real traffic, by focusing on the

analysis of:

safety

traffic efficiency

environment

driver behaviour

driver workload

user acceptance

usability

• Cost-benefit analysis, based on results from the impact

assessment


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Introduction

euroFOT• euroFOT project started in May 2008

• Project end in August 2011


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Introduction

Coordination of fleet


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Importance of incident

Hypotheses• Incident definition necessary, due to pre-defined hypotheses:

“IW decreases the number of crashes, near crashes and incidents”

“LDW decreases lateral incidents, near crashes and accidents”

“Using FCW, the number of forward crashes, near crashes and

incidents will decrease”

„ACC decreases the number of forward incidents“

• Hypotheses do not consider combination of function and relevant

driving situations


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Importance of incident

Impact assessment

14.12.2009 ICTCT 22.Workshop, Leeds7

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Incident definition

Interaction• Mainly four sub-projects involved:


SP1: Management

SP5: Coordination of

VMCs

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Incident definition

Challenges• Hypotheses are too general and not related to specific driving

situations

• Differences between VMCs in data acquisition systems and

sensors

German1-VMC: only CAN data available

Swedish-VMC: CAN-data + Video + Eye tracking systems

• Interactions with other sub-projects (SPs)

input from different sub-projects needed

• Evaluation of additional information from external sensors

time consuming


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Incident definition

“Incident”• In euroFOT an incident is a specific event, which is defined as:

“something that happens in a specific period of time which is

individuated combining (pre-processed) measures according to

predefined rules. A sub-event is a specific sub-set of an event”

• According to definition in euroFOT, an incident is defined as:

“an occurrence that could have resulted in a crash or near crash,

if the circumstances would have been more adverse”

• Examples for incident:

ESP intervention,

ABS intervention,

driver distraction,

unintentional lane or road departure


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Incident definition

Methodology


Event Incident

Scenario

Incident in day light in high

traffic density on a motorway…

Weather(e. g., rain)

Traffic(e. g., high density)

Lighting(e. g., day light)

Road type(e. g., motorway)

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Necessary Sensors

CAN

Video

GPS

Eye-tracking system

Function Groups

Longitudinal systems

Lateral systems

Safe-HMI

FEA

Approach in euroFOT

Sensors and function groups


• Definition considers:

available sensors

functions to be tested

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Approach in euroFOT

Template

14/12/200913 ICTCT 22.Workshop, Leeds

Author(s):

Necessary Sensors

CAN

Video

Function Group

Longitudinal Systems

Lateral Systems

SafeHMI

FEA

Description in words

Drawing of how the event “looks like” (optional)

click here to insert picture

Exclusions

Necessary and optional measures

CA

N

Vid

eo

ext

ra s

enso

r

CA

N

Vid

eo

ext

ra s

enso

r

1. necessary measure

5. optional measure


6. optional measure


7. optional measure


8. optional measure

Algorithm/Equation (alternative suggestions should be described under “general comments”)

Start of Event

whichever comes first

End of Event


Necessary conditions (what has to be fulfilled for the event to classify as such)

Typical conditions (not necessarily present, but can give an indication for the event)

Sub-events (optional, sub-events exist only for a sub-set of events)

Sub-event 1

start


necessary condition(s)

end


Sub-event 2

start



end


Sub-event 3

start



end


• Event template for definition of

incident has been used

• Definition is made according to

specifics of different VMCs in

euroFOT (e.g., available sensors,

experimental design etc.)

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Approach in euroFOT

Measures


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Approach in euroFOT

Indicators• Main data source CAN measures from vehicles’ CAN bus

• Indicators are based on:

functional warnings

function activation/intervention

vehicle dynamics

driver reaction

• Additionally video and eye tracking systems are considered for

driver impairment and distraction


Source: Opel

Source: vtmagazine

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Approach in euroFOT

Exclusions• Other incidents not related to functional warnings, vehicle

dynamics or driver reactions can hardly be detected by means of

CAN data

• Additional sensors needed for offering more insights on

surrounding as well as driver state, e.g.,

pedestrian/animal approaching

running over red-light

neglecting priority at crossing

driver distraction

• Evaluation of incidents from additional

sensor data require extensive

video analysis


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Current status

Progress• Incidents are partly defined and discussed within SP4

forwarded to other SPs

• Incident definition is still not completed, because:

prioritized indicators are defined, but final threshold for indicators and

measures are needed

discussion on incident approach in SP6 is ongoing, i.e., maybe

further requirements on incident

• Implementation of algorithms for event detection started


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Current status

Indicator brakingBraking manoeuvre:


Indicator Criteria/ Measures

Hard deceleration Deceleration > x m/s2

Warning brake assist (BA)

ABS-intervention

Source: BOSCH

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Current status

Indicator lane/road departureUnintended lane or road departure:



Tire outside marking Vehicle velocity > x m/s

Status LDW, lane marking

Steering angle

Turning indicator status

Curve radius > x m

Source: VOLVOSource: Media-VW

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Current status

Indicator critical following situationsCritical following distance:


Indicator Criteria / Measures

Time headway < x s Vehicle velocity > x m/s

Time to collision < x s Distance forward vehicle

Relative velocity

Warning FCW

Source: Opel

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Current status

Other indicatorsOther indicators:



ESP intervention Status ESP

Steering velocity > x ◦/s Steering angle

Warning Status function XXX

Driver state Drowsiness and distraction level > x

Definition of thresholds for indicators and measures needed

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Outlook

• Piloting (3 months):

Testing of FOT vehicles (sensors, actuators etc.)

Testing of data acquisition procedure (data acquisition system, data

upload, data pre-processing and storage)

Testing of analysis approach (is collected and pre-processed data

sufficient to test pre-defined hypotheses etc.)

• Ramp-up by beginning of January 2010


www.eurofot-ip.eu14.12.2009 ICTCT 22.Workshop, Leeds

Thank you for your attention…

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